A robot is provided with a position setting unit for setting the position information of a destination, a locomotion unit for a movement to the set position, an actuator for driving the locomotion unit to the set position of movement, and a radio detection system for detecting the presence or absence of an unauthorized radio wave based on received radio waves. The radio detection system includes a radio receiver for detecting radio signals at mutually different positions in accordance with position information, a radio signal storage for storing the detected radio signals, a radio signal verifier for detecting the presence or absence of a radio signal having the same characteristics by comparing a detected radio signal and the radio signal stored in the radio signal storage, and an unauthorized radio wave detector for detecting the presence of an unauthorized radio wave when the radio signal having the same characteristics is present.